Kensington Palace announced the news, tweeting: ‘Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 1101hrs. The baby weighs 8lbs 7oz. The Duke of Cambridge was present for the birth. Her Royal Highness and her child are both doing well.’

Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 1101hrs.

The couple exchanged a few words as they waved to the waiting crowd, although it wasn’t clear what they’d chatted about. But now the Daily Mirror has asked a professional lip reader to decipher their conversation – and this is it…